Три предложпрям вопросительные, три отрицания , три утвердительных предложения в present perfect continuous. !

Present Continuous
+ She is reading a book right now.
- He is not going for a walk now.
? What are they doing?

Вопросительные: Have you been waiting for me for two hours?  How long have you been studying Spanish? Has she been using my car again?

утвердительные:I have been waiting for you for two hours.I have been living in Kiev since 1975. He has been playing football all day.

отрицания:I have not been waiting for you for two hours.It has not been snowing here since 1993.She has not been working since 2002.